diff --git a/libraries/AP_CANManager/AP_CANManager.h b/libraries/AP_CANManager/AP_CANManager.h
index a0086fce2b..32911f5e66 100644
--- a/libraries/AP_CANManager/AP_CANManager.h
+++ b/libraries/AP_CANManager/AP_CANManager.h
@@ -141,7 +141,6 @@ private:
 
     private:
         AP_Int8 _driver_type;
-        AP_CANDriver* _testcan;
         AP_CANDriver* _uavcan;
         AP_CANDriver* _piccolocan;
     };